Wandbox

Ran/Viewed Log

Author

anonymous

almost 6 years ago

Language

C++

Compiler

gcc HEAD 10.0.0 20190605 (experimental)

Options

Warnings

Boost 1.70.0

C++2a(GNU)

-pedantic

Author

anonymous

almost 6 years ago

$ g++ prog.cc -Wall -Wextra -I/opt/wandbox/boost-1.70.0/gcc-head/include -std=gnu++2a -pedantic

prog.cc: In function 'int main()':
prog.cc:33:10: warning: ignoring return value of 'std::enable_if_t<(! is_void_v<T>), T> Wrapper<FuncT>::operator()(ARG&& ...) [with ARG = {}; T = int; FuncT = main()::<lambda()>; std::enable_if_t<(! is_void_v<T>), T> = int]', declared with attribute nodiscard [-Wunused-result]
   33 |     test2(); // <-- Warning issued here
      |     ~~~~~^~
prog.cc:20:63: note: declared here
   20 |         [[nodiscard]] std::enable_if_t<!std::is_void_v<T>, T> operator()(ARG&&... args) {
      |                                                               ^~~~~~~~
Test 1
Test 2

Exit Code:

0